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Fouga Gemeaux Aircraft Information

Fouga Gemeaux

CM.88 Gemeaux

Manufacturer: Estalissements Fouga et Cie
First flight: 1951
Number built: 1
Developed from: Fouga CM.8

The Fouga CM.88 Gemeaux was a 1950s French engine test-bed aircraft produced by Fouga. An unusual aircraft as it was two aircraft joined by a common wing.

Design and development

To meet a requirement to use as an engined testbed for Turboméca turbojets, Fouga combined two CM.8 fuselages. It used the port and starboard outerwings with a new wing centre section to join the two fuselages. The V-tails fitted to each fuselage were joined at the top in a W configuration. The type was designated the Fouga CM.88-R Gemeuax I and first flew 6 March 1951, it was fitted with two Turboméca Piméné turbojet, one on top of each fuselage. Further variants were produced as the engine fit was changed.


Gemeaux I
Original configuration with two 220 lb (100 kg) Turboméca Piméné turbojet engines, first flown 6 March 1951.
Gemeaux II
Designation when powered by one 606 lb (275 kg) Turboméca Marboré I turbojet engine, first flown 16 June 1951.
Gemeaux III
Designation when powered by one prototype 772 lb (350 kg) thrust Turboméca Marboré II turbojet engine and first flown on 24 August 1951. A production version of the engine with 882 lb (400 kg) thrust was flown on 2 January 1952.
Gemeaux IV
Designation when powered by one 441 lb (200 kg) thrust Turboméca Aspin I turbojet engine, first flown on 6 November 1951.
Gemeuax V
Final designation when powered by one 794 lb (360 kg) thrust Turboméca Aspin II turbojet engine, first flown on 21 June 1952.

Specifications (Gemeaux III)

General characteristics

Length: 21 ft 10½ in (6.66 m)
Wingspan: 35 ft 3½ in (10.76 m)
Height: 6 ft 4 in (1.93 m)
Wing area: 137.78 ft² (12.80 m²)
Empty weight: 1,962 lb (890 kg)
Max takeoff weight: 2,579 lb (1170 kg)
Powerplant: 1x— Turboméca Marboré II turbojet, 882 lb (400 kg)


Maximum speed: 249 mph (400 km/h)
Service ceiling: 32,810 ft (10000 m)

The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.

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Source: WikiPedia

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